package oj;


import java.util.*;

public class Main1 {
    private static TreeNode head;
    private int size;
    public static class TreeNode {
        String val;
        TreeNode left;
        TreeNode right;
        TreeNode() {
        }
        TreeNode(String val) {
            this.val = val;
        }
        TreeNode(String val, TreeNode left, TreeNode right) {
        this.val =val;
        this.left =left;
        this.right =right;
    }
        public void createRoot(String root){

        }
        public void createTree(String root,String left,String right){
            if (head==null){

            }
        }
}


    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        String root=scanner.nextLine();
        TreeNode treeNode=new TreeNode();

    }
}